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Hydraulic drives are gearboxes connecting power source and hydraulic
pumps in hydrostatic drives. They are also called fluid drives.
Hydraulic drives are used to hydraulically change the speed of the
driven load when the driving motor is operating at a constant speed. In
hydraulic drives, there are two methods of hydraulically varying the
speed : fluid coupling and hydraulic pump and motor. Types of Hydraulic Drives
There are three basic types of hydraulic drives, which can be applied for the winches:
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All applied elements of fluid drive is of marine make suitable for sea weather conditions. Hydraulic installation mounted on winches is terminated with fittings or flanges enabling connecting of winches to ship's piping. The hydraulic installation on the winches can also be made of stainless steel.
Characteristics
Hydraulic drives are often better for more heavy duty processing. They are also better for processing materials that experience frequent overloads from batch feeding. They offer better shockload protection from non-shreddables and allow more precise particle size control. If some shock hits the system, fluid hits a release valve and bypasses the system. Fluid drives are an attractive and cost efficient proposition when two or more winches are to be power driven.
Applications
They have wider applications in cranes, deck machinery, ramp winches, thrusters, drilling, anchor winches, auxiliary winches, trawl winches, dredging and also for steering of luxury cruisers. Low inertia and instantaneous response makes hydraulic drives perfect for feeders and conveyor belts where rapid fluctuations in load can lead to costly breakdowns.